
function doCalc() {
 var princ = document.calc.amount.value;
 var term  = document.calc.months.value;
 var intr   = document.calc.rate.value / 1200;
 //document.calc.pay.value = Math.round(princ * intr / (1 - (Math.pow(1/(1 + intr), term))));
 var payTag = document.getElementById("pay");
 payTag.innerHTML = "kr. " + Math.round(princ * intr / (1 - (Math.pow(1/(1 + intr), term))));
}

function dw(s) {
 document.write(s);
}

dw('<form name="calc">');
dw('<table cellspacing="5" cellpadding="0" border="0">');
dw('<tr><td colspan="2"><font size="+1"><b>L&aring;ne beregning</b></font></td></tr>');
dw('<tr><td>Bel&oslash;b der skal l&aring;nes</td><td><select style="border: solid 1px #000000;" name="amount" onChange="doCalc();"><option value="10000">kr. 10.000</option><option value="25000">kr. 25.000</option><option value="50000" selected="true">kr. 50.000</option><option value="75000">kr. 75.000</option><option value="100000">kr. 100.000</option><option value="150000">kr. 150.000</option><option value="200000">kr. 200.000</option><option value="250000">kr. 250.000</option><option value="300000">kr. 300.000</option><option value="400000">kr. 400.000</option><option value="500000">kr. 500.000</option></select></td></tr>');
dw('<tr><td>Over antal &aring;r</td><td><select name="months" onChange="doCalc();"><option value="12">1 &aring;r</option><option value="24">2 &aring;r</option><option value="36" selected="true">3 &aring;r</option><option value="48">4 &aring;r</option><option value="60">5 &aring;r</option><option value="72">6 &aring;r</option><option value="84">7 &aring;r</option><option value="96">8 &aring;r</option><option value="108">9 &aring;r</option><option value="120">10 &aring;r</option></select></td></tr>');
dw('<tr><td>Rente</td><td><select name="rate" onChange="doCalc();"><option value="2">2%</option><option value="3">3%</option><option value="4">4%</option><option value="5">5%</option><option value="6" selected="true">6%</option><option value="7">7%</option><option value="8">8%</option><option value="9">9%</option><option value="10">10%</option><option value="11">11%</option><option value="12">12%</option><option value="13">13%</option><option value="14">14%</option><option value="15">15%</option><option value="16">16%</option><option value="17">17%</option><option value="18">18%</option><option value="19">19%</option><option value="20">20%</option></select></td></tr>');
dw('<tr><td><b>Afdrag pr. m&aring;ned</b></td><td><b><span id="pay"></span></b></td></tr>');
dw('<tr><td colspan="2"><font size="-1">Beregningen er vejledende og blot til sammenligning af l&aring;n.<br>Det realistiske billede f&aring;es ved at regne med de<br>&aring;rlige omkostninger i procent.<br> S&aring; kan man f&aring; et 7% l&aring;n, skal man regne med 10%-12%<br> som den faktisk rente i beregningen.</font></td></tr>');
dw('</table>');
dw('</form>');

window.onLoad=doCalc();
